Hi there! what you have to do is set the text node to merge, leave it as you want it to appear by default, and then select everything but the out node, right click and select / macro / macro creation.
and there you will see a box with many features that you can add to your template, in this example you will have to go to the text node that you created earlier and from there select what you need. (there are many features available I recommend you take a look at youtube as it can be a bit overwhelming at first). and then when you save it restart davinci resolve and look for it in titles with the name you have given to your template, and then you will have it ready to use in any project independently.