Let's create a GANTT chart with Microsoft Lists - Fedes365/Microsoft-Lists-Templates GitHub Wiki

A GANTT is often defined as "a type of bar chart that illustrates a project schedule. This chart lists the tasks to be performed on the vertical axis, and time intervals on the horizontal axis. The width of the horizontal bars in the graph shows the duration of each activity."

Here is the data table I used as a sample for my GANTT chart. Besides the Title column, all those ones contained in the data table I shared are mandatory, in order to get what you see in this view. Other columns may be added if a not GANTT view is needed (a normal list):

How to:

1) LIST CREATION: Create a new list from scratch and add the following columns:

COLUMN NAME	COLUMN TYPE
Title	It's the default Title column where you provide a short activity description.
ProjectStart	Date column
ProjectDue	Date column
TaskStart	Date column
TaskDue	Date column
Progress	Number column with percent, zero decilmals and 100 max value.

2) LIST VIEW CREATION: Create a new list view and provide a custon name.

3) JSON CODE: Copy the JSON code available here

4) LIST VIEW FORMATTING: Paste the JSON code into the view formatting box (Advanced formatting mode)

5) FINAL RESULT: Here is a sample of the final result you should get in Microsoft Teams after following the steps of this tutorial: