Configuring permissions for correct uploads

Problem: I am creating a document within the multifunctional bulletin board of the TinfoDoc document flow. I attach a file from my filesystem, but the attachment is not present when I save it. What should I do?

Solution: For the correct functioning of the uploads attached within a document, or within a dossier, it is necessary to assign an additional permission of the Document & Media Library of Liferay to the user.

1 - Log in with an Admin user and access the control panel

2 - Check that the user or group or organization of Liferay to which the account that highlighted the problem belongs has assigned the permission Add Document: Permission to add a document in the Documents and Media portlet