How to get bot engis to build in specific spots?

bot_hint_engineer_nest is used for MVM only. There is no hint for dispensers.

You can do this by editing the navmesh in-game.
Just open the console and input these commands.

1. nav_edit 1
2. Find and look at the nav square you want to mark as a sentry spot
3. tf_mark_sentry_spot

You can also use nav_select to select multiple nav squares.
Due to the way engineer bots are coded, it's not possible to designate where to build dispensers/teleporters, as engineer bots will always try to build a nest around their sentry.

Additionally, you can use tf_mark_sniper_spot if you'd like to do the same thing for snipers!

Note: the sentry spot won't be exactly where you are looking at when you use tf_mark_sentry_spot, it will be the entirety of the nav square you are aiming within. If you feel that the area is too big, you can use the nav_split command to 'cut' the square into pieces and refine the area you want sentries to be built within.

bot generally regardless of gamemode head towards the hints you give them