Populate data in userform and edit

I have created a user form

UserForm1

for daily expenses entry. the form populate data into two different worksheets "Database" and "I&E" working perfectly. Now i want to give an administrative right to some user to edit the data.

 Userform3

is used for the password and makes visible

combobox1

. this combobox is for populate data again to the userform based on vauchar no.

With my little knowledge I can populate some of the data to the userform but as per as the option Buttons are concerned i am stuck. In

Uaserform1

if

 optionbutton1

is selected it populates "cash" in 'Mode' column in Database worksheet so if column Mode (I) is "cash" I want

 OptionButton1

to be selected, else if Mode column is "Cheque"

OptionButton2

will be selected with

Textbox6

&

Combobox4

visible with the cheque No and Bank name from column 'J' & 'K'.
Secondly

 Commandbutton6

is for update the data. Can any one help me with the code to update the data in to

worksheets ("Database")

and

worksheets ("I&E")

Thanks in advance.
is there any way to protect the Worksheets so that no entry or modification should be done directly but through usrtform.
My

Userform2

is for new entry of catagories

T
hanks again.
please see the attachment