You can input many elements separated by a SPACE character using the "In list" operator.

Pick in the following list to put one element
<examples> f r

You can input one or many elements separated by a space character. Pick in the following list to put element in the feature contains criterion
<examples> vector ribosome mitochondry yeast coli univec

You can input many elements separated by a SPACE character using the "In list" operator.