How to have a default animation ?

The default animation is the first animation in setup order. So this is the first in the setupmultisit notecard. For example in this notecard :

Laying_Arm_Across_M@-12,-7,125@0,0,90
Laying_Makeout_M@-19,0,133@0,0,90
Laying_Neck_Kiss_M@-19,0,133@0,0,90
Laying_Pinned_Kiss_M@-19,0,130@0,0,90

The default animation is "Laying_Arm_Across_M".

setupmultisit method

You can change this order to get another default animation. For example :

Laying_Neck_Kiss_M@-19,0,133@0,0,90
Laying_Arm_Across_M@-12,-7,125@0,0,90
Laying_Makeout_M@-19,0,133@0,0,90
Laying_Pinned_Kiss_M@-19,0,130@0,0,90

In this case the default animation is "Laying_Neck_Kiss_M".

You always must reset the script multisit to make the change effective when you change the notecard setupmultisit.

configmultisit method

You also can change the default animation in the configmultisit notecard. Just create a @list section and add the animation name :

@list
Laying_Neck_Kiss_M

It is simplier !

In this method you dont have to reset the script multisit but you must increment the @version section.