Hello everyone. My question is about creating a library item. I must say I watched the training materials, but it did not help much for my case. The screenshot below shows a folder containing a part named tube-ss.

How to create templates so that you can not just select a finished part, but a part with the specified dimensions (that is, when a new component is inserted, a window with parameters appears). The same issue applies to flanges, it is necessary to be able to insert your own flanges according to the nominal pressure and nominal diameter. - screenshot below.​​​​​​​The next question is about Toolbox.

How to create your own Toolbox item with selectable options for that item.

I looked at the training materials, but they only say in general phrases that you need to go into a folder, create a part, etc. But when I open ready-made parts, there is no equation, there are no parameters, how they were created is not clear. Please tell me if you can.

SOLIDWORKS ​​​​​​​Edu ​​​​​​​