Hi Judy -
Thanks for reaching out. To answer your question, Vela gives you the ability to add and/or delete as many tags as you like . To do so, simply select the listings you'd like to edit from the main Listings Page, and then click "Edit Listings" to enter the Bulk Edit page.
Next, click "Tags" on the sidebar where you'll then see all of your selected listings will their current tags.
At this point you can choose to either "Add" new tags or "Delete" existing tags to multiple listings in bulk, or click the "x" on any individual tag to delete it directly.
If you choose to "Add" tags, new tags will appear at the end of each listings existing tags in green. If you choose to "Delete" tags, then those tags will appear red wherever they are found.
Once you're done with your edits, click "Apply" to save the changes in Vela and then "Sync Updates" to push the, to Etsy.
Hopefully, this makes things clear, but please let me know if you have any questions or if I can help in any way :-)
Best,
Justin