URL for showing certain criteria, and then combining these

in Development
Can anyone chime in on how I can combine certain criteria. I've been building this based off of help on this forum (thank you Adrian and Alex!)
I need to take my url criteria one step further.
This pulls items shops and item vendor details with quantities of more than 0.
?load_relations=["ItemShops", "ItemVendorNums"]&ItemShops.qoh=>,0
I'd like to know
1. How I can modify the above to also include a certain category (separate url)
2. How I can modify to only show a certain vendor (separate url)
3. Url on how to combine both 1 and 2
?load_relations=["ItemShops", "ItemVendorNums"]&ItemShops.qoh=>,0
I'd like to know
1. How I can modify the above to also include a certain category (separate url)
2. How I can modify to only show a certain vendor (separate url)
3. Url on how to combine both 1 and 2
Super Cat Lightspeed
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1 comment
1. https://api.lightspeed.com/API/Account/{{AcccountId}}/Item.json?load_relations=["Category"]&categoryID={{number}}
2. (still figuring this one out)
3. https://api.lightspeedapp.com/API/Account/{{AccountID}}/Item.json?load_relations=["ItemShops","ItemVendorNums","Category"]&categoryID={{CategoryNumber}}&ItemShops.qoh=>,0