Step 1
You have one year
First thing: you have 1 year from when the discrimination happened to file a complaint. That clock is real and it doesn't wait. If this was more than a year ago, you can still talk to a lawyer about a civil lawsuit (2-year deadline for that). But the BOLI/HUD complaint window is 1 year.
If you're close to that deadline, skip ahead to Step 4 and file now.
Source: ORS 659A.875, Time limit for complaints | Oregon Law Help, Discrimination Deadlines