in case you want to test with the data you have right now in your instance you only can upgrade as a "whole". Combining in that sense is not possible.
If you only want to have a playground and a short test you could subscribe to a new site and let it downgrade after the test to the "Free" plan.
What for a single site using a Jira Software subscription, like under "mysupersite2021.atlassian.net", is not possible is to have 10 Users on a Free plan, 10 Users on a Standard plan and another 100 on a Premium plan.
Hey there Cloud Community members! We’re excited to give you the first glimpse of the new home for business teams on Jira — Jira Work Management. Jira Work Management is the next generation of J...
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