You can add as many assets to your Portfolio as you need
There is no restriction on the number of assets, but you may notice with a very large number of assets that the page takes some time to load as it runs the revenue comparisons.
Add assets to Portfolio using this button:
You will then be presented with a dialogue to search for assets:
You can add and select multiple assets in one go. Simply keep on finding assets and clicking on them!
Once you've selected all of the assets that you need, click on the "Add" button.