Setting a minimum stock (a.k.a. Minstock) is encouraged for items that sell very fast. Minimum Stock creates a "buffer" between the quantity you actually carry and what you list on the marketplace. It does this by subtracting the "Min Stock" from your available quantity before updating the channel. For example, if you have 6 in stock, and a Minstock of 2. We will update eBay with a quantity available of 4. If the result of this math is negative, SureDone will send 0.
If you use multiple stock fields, we will sum those stock fields before applying minimum stock. For example, if vendor1 has 3 and vendor2 has 4, and your Minstock is 2, we will send 5 to eBay (3+4=7, 7-2=5).
When you set a min stock you are also creating a new "zero" for your stock meaning once that item gets to that amount in stock, it will be seen as out of stock on eBay. Although this doesn’t seem ideal in the sense that you want to sell every last product of yours it is still useful to prevent oversells for items that do sell fast since it known that there is a lag time between when sales occur and when they come into SureDone.
The way to create a minimum stock is to go to Settings > Custom Fields and go to the Add Custom User Field. Once you expand this section you will need to choose a name and label for your field. Additionally, you should to choose Type: Integer and make sure you have the Display toggle off. This is an example of how it might look:
Keep in mind that the label is how it appears on the SureDone interface and the name is the header you see in your .csv file for the field. Once you fill out the above, you can click Save Settings and refresh the page to see it listed by your other custom fields:
Afterwards you will need to map it to the Min Stock field by going to Settings > Channels and expanding the eBay section. Then you go to Min Stock Field and select the custom field you just added from the dropdown:
Once you choose from the dropdown you can click Save Settings. Now you should be able to see the Min Stock field in your product editor: