To submit an abstract for a conference, you use the event's abstract portal, which has its own login. Your work is saved as a draft while you fill in the form, and some calls let you send more than one submission.

The details page shows the description, the Submission Deadline and the organiser's Submission Guidelines. Read the guidelines before you start. They usually cover length, format and what files to include.

When you're logged in, your email is filled in and locked. To use a different address, click Change Email next to it. See How Abstract Authors Can Manage Their Profile, Email and Password.
Click View Guidelines on the left at any time to reread the guidelines without leaving the form.
Some calls ask for a video, for example a short presentation. The field tells you the limit: "Video size cannot be more than" the number of MB your organiser set. A progress bar shows the upload. If it fails you see "Upload failed. Retry or remove this file." with a retry icon and a remove icon.
Wait for every upload to finish before you submit. Otherwise you see "Please wait until all files finish uploading." or "Some files failed to upload. Retry or remove them before submitting."
The form saves a draft for you automatically while the page is open, and you can click Save as Draft at any time. "Last saved" shows when it was last saved. If a file is still uploading when you save, you see "Draft saved. Files still uploading will be added to your draft once they finish."
A draft is only saved once you've filled in something other than your email. It's deleted automatically when you submit.

You'll see "Abstract submitted successfully." with a note that you'll be notified by email if you're shortlisted. Click Back to Details to return.
If you have an account, track the review in My Submissions. See How Abstract Authors Can Track Their Submission Status.
Some calls accept more than one submission from the same person. When that's allowed and you're logged in, a Submit Again button appears next to the call. It opens a blank form with a "New Submission" banner. The new one is saved separately and doesn't change your earlier submissions.
Can I add co-authors?
Only if the organiser's form has a field for them. There's no separate co-author section.
Can I delete a draft?
There's no option to delete a draft yourself. It's removed when you submit.
Can I upload a video with my abstract?
Only if the organiser's form has a video field. The field shows the size limit, and you need to wait for the upload to finish before you submit.
What happens after I submit an abstract?
You see "Abstract submitted successfully." and you're notified by email if you're shortlisted. With an account, you can track the review in My Submissions.
Can I submit an abstract after the deadline?
No. Once the deadline has passed, the portal shows "Submission Closed".
Can I submit more than one abstract to the same call?
Only if the call allows it. When it does and you're logged in, a Submit Again button appears next to the call.
Can't find the portal or your submission? The abstract portal is set up by your event organiser. Contact them for the link or help with your account.