If I understand you correctly, I would just draw the shapes, then select them all and either add to a library or save as a snippet. You can group them if mostly you would want to have them grouped when put into a new file, but that isn't a requirement for creating the snippet or library object.
Thank you for your reply to my question.
I like the suggestions you make and would like to explore them at greater depth to see if they work for me and my project. I still have some question and would be very grateful if you could help me or guide me in the right direction. These are the questions I have about your suggestions:
1. In case I add them to a library or save them as a snippet as you suggest, will their contours or curves remain editable ?
2. What exactly is a snippet ? I do understand the concept of saving an element to a library to be used later in other projects but haven't worked with snippets before and don't know what they are.
3. In case I create this shapes, how can I later fill the inside with an image or a color pattern ? In other words, the outline would be done using a selected line color and thickness but center would remain transparent until the very last step in the project when the center would then be filled with an image or pattern. In case I use an image, how can I have this image 'clipped' to the shape of this contour I create ?
Any help you can provide will be very appreciated.
Thank you again,
Your objects will remain completely editable as objects when pulled from a library or placed as snippets.
Functionally, I don't think there's a lot of difference, but Libraries need to be open to use them (which means only one user at a time can access), while snippets are saved objects that you would treat much like a graphic and can be stored anywhere.