DD6300 capacity expansion by adding new disks to the existing diskgroup

Our other DD6300 is factory installed with the same number of disks has the following capacity.

sysadmin@HU712ST07# sysadmin@HU712ST07# filesys show space

Active Tier:
Resource           Size GiB   Used GiB   Avail GiB   Use%   Cleanable GiB*
----------------   --------   --------   ---------   ----   --------------
/data: pre-comp           -   258940.6           -      -                -
/data: post-comp    31060.7    20838.1     10222.6    67%              5.9
/ddvar                 47.1       22.9        21.8    51%                -
/ddvar/core           108.1        0.4       102.2     0%                -
----------------   --------   --------   ---------   ----   --------------
 

sysadmin@HU712ST07# storage show tier active
Active tier details:
Disk      Disks               Count   Disk       Additional
Group                                 Size       Information
-------   -----------------   -----   --------   -----------
dg0       1.1-1.5, 1.7-1.12   11      3.6 TiB
(spare)   1.6                 1       3.6 TiB
-------   -----------------   -----   --------   -----------

Current active tier size: 32.7 TiB
Active tier maximum capacity: 163.7 Ti

On the expanded DD we have two disk groups, 4 disks are used for parity.

sysadmin@HU712ST05# sysadmin@HU712ST05#  storage show tier active
Active tier details:
Disk      Disks           Count   Disk       Additional
Group                             Size       Information
-------   -------------   -----   --------   -----------
dg0       1.2-1.7         6       3.6 TiB
dg2       1.1, 1.8-1.11   5       3.6 TiB
(spare)   1.12            1       3.6 TiB
-------   -------------   -----   --------   -----------

Current active tier size: 25.4 TiB
Active tier maximum capacity: 163.7 TiB

How could we reconfigure the storage in one disk group, to have 32.7 TiB tier capacity.