Page describing how to use syntaxes for modification of client-side armor stands.
Rotating armor stand's parts
effect: rotate part (1¦head|2¦body|3¦left arm|4¦right arm|5¦left leg|6¦right leg) of clientside armorstand with id %integer% by %number% %number% %number% for %players%
This effect can rotate all parts of armor stands, using 3F Vectors (same as vanilla commands)
Example: rotate part head of clientside armorstand with id 101 by 15 15 15 for player
Changing armor stand type
effect: change clientside armorstand with id %integer% type to %integer% for %players%
Armor stand types: 1:Small, 4:Arms, 8:NoBase, 16:Marker
To combine them, just count those numbers together, for example, a small armor stand with arms will be type 5, an armor stand with arms, and without base will be 12.
Example: change clientside armorstand with id 101 type to 5 for player