check here for more info:

http://alivemod.com/wiki/index.php/Multispawn

I don't think it allows for a player choice.. if the multispawn option is available it will try that first then default back to the "respawn_side" marker. I have not tried it yet using respawnTemplates in description.ext

Say if you have it set to squad respawn and all your squad members die... or a vehicle as an MHQ respawn point and it gets blown up, etc.

edit: sorry if you mean insertion one specifically perhaps during the mission the insertion vehicle gets destroyed or some other 'event'

You could try doing

onSingleMapClick "markername setMarkerPos _pos"

Which would set the insertion marker position to wherever you click on the map

Very rough outline of a possible solution to moving the marker mid mission. I can finish it when I get home if needed.

Ok finished it up and it should work, I'll edit the post in a few minutes once I have it tested to make sure.

Ok well damn, couldn't get it to work but I can't see the error. I tried moving the respawn_west marker and seeing if I would respawn where I moved the marker to, it didn't seem to work.. maybe someone else can scavenge this code and tell me what's wrong.

_caller = _this select 1;
openMap true;
onMapSingleClick "respawn_west setMarkerPos _pos; clicked = 1; openmap false;onMapSingleClick ''; true;";
waitUntil {(clicked == 1)};
hint "Insertion marker has been moved";

..I'll try changing something real quick and try that
I feel like this is too simple to not work lol

Edit: Yeah I messed up somewhere give me a sec to fix.

Ok GOT IT, apparently you cannot move a respawn marker such as respawn_west through a client

This just means you can't move the base respawn marker but I believe it should work fine for the insertion marker.. Here is the new script

_caller = _this select 1;
openMap true;
onMapSingleClick "'marker1' setMarkerPos _pos; clicked = 1; openmap false;onMapSingleClick ''; true;";

Add this code to a notepad file and save it in your mission folder and name it moveMarker.sqf
To make this code work for you, simply change "marker1" to the to the name of your insertion marker that you want to move

Add this code to a notepad file and save it in your mission folder and name it moveMarker.sqf

Then to add the action to a player put this in there initialization box: this addAction ["Move insertion points","moveMarker"];

.. If you have the debug menu active for your mission you can just put this code in there and then change "this" to the name of the unit you want to add it to and hit "Local Exec"

Here is a demo mission: http://www.mediafire.com/download/thdz182v15dc57m/MarkerMovement.VR.pbo
non-pbo'ed version: http://www.mediafire.com/download/iaj2umqzua9iwy4/MarkerMovement.VR.rar

Np, note that in the demo you are moved to the location that the marker is moved to, I just did this to show that it actually works. In the example code I put in my last post this does not happen. So for an actual mission just overwrite the moveMarker.sqf in the demo mission with what I posted previously

_caller = _this select 1;
openMap true;
onMapSingleClick "'marker1' setMarkerPos _pos; clicked = 1; openmap false;onMapSingleClick ''; true;";

Ill take a look when I get home. I don't really use the multispawn module so I can't give much help off the top of my head.

I'll change that script as well.

Edit: I have some time so i'll try to adress some of it here

2. I'll change the script, no problem

3. I don't think you can add the basic type of respawn along with multispawn respawn options. Maybe this could be submitted for a feature request. Concerning multispawn not visually showing the updated insertion point, this may just be a limitation of the multispawn module because tbey might not have planned on the marker ever being moved. Could be wrong but it's the first thing that came into mind.