Yes. For minimums, you can create custom invite links in your dashboard that will establish a minimum for that investor (or set a default minimum amount for the entire campaign).
For maximums, the AngelList team can reduce or prorate investors down as necessary.
We will do a final pass with you before wiring funds to make sure the allocations work for you. What we’ve seen work before is to email investors with a note saying something like “Your allocation is $75k. You can close using this link: https://angel.co/i/abcd"