How does one control which profile opens URLs from other programs by default?

[gswallow]

I have three profiles: work, personal, and "incognito" or "log into Okta with some other account" is more apropos.

Whenever I click a link in Slack or some other external program, it opens in my personal Firefox profile, but I'd prefer if it opens in the work profile. Is there a way to configure this behavior?

[ronanscripts]

as far as im aware this feature doesnt exist, but it may be related to whatever profile is your "default" profile.

[dmje]

Came here to ask this - for me, a link from any app appears to always open in one of my (2) profiles, and it isn't (weirdly?) my default one. I don't necessarily need the granularity to always open X link in Y profile, but it'd be nice to know why links open in the "wrong" one...?!