is there a hotkey for marking units (or a way to make one)?

I don't even care how they get marked, so long as they change. it can even be a glow radius on them, idc. I just need to distinguish dozens at a time somehow, and then turn it off for next turn.

Let me be more specific. I want to highlight a token or tokens, hit a hotkey, and add a colored dot, or the little ninja face, or anything. I see stuff about chatsetattr and tokenmod, but those use the chat window i think. That is even slower than just going thru the 3 clicks per token to add 1 thing.

There are ways to do this with a macro button, but all require the use of the API (pro subscription), specifically in this use case, Token-mod. Chat Macros cannot change things, they can only report.

You can't set a hotkey (as far as I know), but Tokenmod can probably do what you want.  Access to the api (Tokenmod is an api script) requires a pro subscription though. With tokenmod, you would likely create a collection of commands, set them up as abilities on a character sheet for api commands, and then create a chat menu to display the list of commonly used commands in chat.  So, you would select however many tokens you want to set sight/markers/whatever, click the token action you have set up to bring up your menu, and then click the command to have whatever applied to all the selected tokens. It can do a lot more than set markers though. .

There is a convoluted way to set hotkeys, but the last time I checked, is usable only in Chrome. Keyboard Macro Shortcuts  

ty for answers