Hi, I'm setting up my survey and I have 6 conditions (blocks) that I have currently randomized. However I need 60 respondents for the first four blocks and only 30 respondents for the last two. How can I set these specific quota in Qualtrics?

You can create quotas and if the quota meets your count then select do not show block and select the block which you don't want to show to respondent. And in here add a logic on every block to show only if their quota has not been met.