If grouped properties are to be used in a single tab i would advise using Local Blocks for achieving this, and than using the local block in your Page or Block Model. 

e.g. 

    [ContentType(DisplayName = "Meta Data Block", 
        AvailableInEditMode = false)]
    public class MetaDataBlock : BlockData
    {


    [ContentType(
        DisplayName = "Home Page",
        Description = "Site Home Page",
    public class HomePage : SiteBasePage
    {
        [Display(Name = "Meta Data", Order = 400)]
        public virtual MetaDataBlock MetaData {get;set;

If local blocks do not suit your needs, check out my blog post: 

https://www.gulla.net/episerver-help-texts-improved/

These can be placed in-between other properties. You may customize this to look more like a heading if you like.

The blog post shows step by step, how I created this. 
There is no tooltip in the final result.

Hi Tanvi,

You can refer my blog post-

http://www.ravindrarathore.com/blog/2019/11/03/categorizing-the-user-defined-properties-in-all-properties-view-episerver-cms.html