Start a short newsletter "Tips & Tricks " which is posted weekly in the platform with a little tip to post content, tag content, complete your profile, mention a user. Keep it short and precise, the idea is that it should be a quick content to read
Create a help space on your platform in which you gather all the pedagogical resources.
Organize "Elium breakfasts ", "Elium lunches and learn " or other concepts that allow people to meet, ask questions or discover a particular feature.
Organize online webinars sessions on lunchtime or at different times to discover the basics of the tool.