Remove annotations during manual counting

Dear Qupath users,

First I want to say that QuPath is a promising and interesting program. But I have a question.
After analyze with ‘cell analysis’ --> ‘Positive cell count’ I have too add some positive cells manually.
By the function ‘points tool’ I count manually.

Now my question is, is it possible to delete points during a count without deleting the entire series? (see picture)

Is there anybody who can help me with this?

Best regards,

Kimberly Massy

Click on a point using the counting tool with the Alt key pressed.

References:

Thank you very much!