Ah I think I get what you mean; there are multiple options.
The first one is to save your scene. Saving a scene will save the state of the scene, plugins, and all customizations you made to your character. Or you can load my "demo scene" which has everything setup already. You can then load it (I'm taking for granted that you're on Virt-A-Mate's Creator tier) using the main menu.
However if you want to make it easier to load the plugin, you can make "plugin presets". It's not MUCH faster, but it skips the part where you have to scroll in a long list to find Embody.
Finally, the way I personally am doing it is using Keybindings. You can get it here:
https://hub.virtamate.com/resources/keybindings.4400/
You can go to the "Session Plugins" from the main menu, and add Keybindings. Then, add KeybindingExtensions_AddPlugin too; in the latter, add Embody. You can now use `:AddPlugin.Embody` (it should autocomplete), press enter, and it'll add Embody on the currently selected Person. You can also map a key to `Embody.ToggleActive` in Keybindings. Now you can go in Session Plugin Presets, and select Change User Defaults. Next time you load VaM, Keybindings and KeybindingsExtensions_AddPlugin will still be in your session plugins, so you can quickly add Embody using the `:` fuzzy find or a shortcut, and use your preferred shortcut to enter and leave possession (I use backtick on the keyboard, it's easy to find even in VR).
So long story short, when you save a scene it'll also save your plugins; if you want to add Embody quickly to any scene, the easiest way I know is using Keybindings.
You might also want to check
@JayJayWon's PluginAssist; I didn't have time to look at it yet but it looks like a great solution to make adding plugins easier.