Yes, you can! It is possible to create and save drafts posts for publishing at a later time.
How can I save a post as a draft ?
While composing a post, click the 3-dots in the top right corner to open the action menu
Choose the Convert to draft option
You can now click the Save button to save your draft
Drafts can be saved with or without a scheduled publishing date.
Please note that even if a scheduled publishing date is given to the draft post, it will not publish until it is converted from 'draft mode' to a scheduled post.
How Can I Find My Draft Posts?
If the Draft post you've created has an assigned publishing date, you can follow these steps:
Select the Publishing option (if the draft has a social network selected for it, choose that social network from the drop down menu at the top)
Use the post filter to select Draft posts
Click on the 3-dots on the draft post you wish to view and then click on Edit
If the Draft post you've created doesn't have an assigned publishing date, you can follow these steps:
Select the Publishing option (if the draft has a social network selected for it, choose that social network from the drop down menu at the top)
Use the post filter to select Draft posts
Select Draft with no date or no account option
Click on the 3-dots on the draft post you wish to view and then click on Edit
How Can I Publish A Draft Post?
To publish a draft post, select the specific post as shown above. Click on the Switch to publish mode option.
Once in publishing mode, you can continue to edit your post. When you're finished editing you can select either schedule the post or choose to publish it immediately.