Please follow the below mentioned steps to view the inventory timeline.
Step 1 - Please go to view bills >> Click on inventory.
Step 2 - You can search the product for which you are looking to see the timeline, also you can change the date filter as per the requirement and there you will be able to see the stock in and stock out for the products.
For e.g. - Product named “Stone cottage” for which you have created an invoice and you have selected the quantity as 2, so there in the inventory timeline you will see the stock out quantity as 2.
Similarly for the stock-in – When you create any purchase invoice, the stock will be added to your inventory and there you will see the stock-in quantity for the product.